Since the beginning, Geoquest has been involved in the development of roads and motorways
The types of work required to build road infrastructure precisely match the universal application of Geoquest’s flagship solution. Reinforced Earth® is an excellent fit to the road sector. In fact, the construction of roads often implies creating a path through landforms and may therefore require cutting through hills and uneven terrain or widening and rehabilitating existing infrastructure. Over the years, our teams of engineers and designers have gained tremendous experience developing engineered solutions for the most challenging situations for dealing with all types of soils, project constraints and land formations.
Dedicated applications for Road and Motorways
Soft soils on the sides of the roadways resulting from excavation need stabilising to secure the infrastructure and mitigate the risk of sliding. The Reinforced Earth® technology is used globally and allows for building safe, resilient and flexible structures that can be single-tier or multi-tier, such as vertical retaining walls. Reinforced Earth® can accommodate different types of backfills using steel or geosynthetic soil reinforcements. Retaining walls can also be designed and built using precast retaining walls such as T-Wall® or TechWall™.
Geoquest offers various options for the construction of enbankments using geogrids. Given the constraints, we can provide engineered solutions for:
Mastering soil conditions and long-term behavior under traffic is of outmost importance when building a road, especially when dealing with poor soil conditions and low bearing capacity. Our range of geogrids associated with our engineering expertise can help build roads under the most challenging conditions while reducing costs, construction time and assuring long-term performance of the pavement.
In fact, compared to traditional road construction methods, using geogrids would allow you to reduce the necessary excavations and volumes of aggregates to be used to build flexible and resilient pavements. Our wide range of high-performance geogrids will allow for a better control of long-term behavior of the infrastructure and reduce the maintenance costs over the service life of the structures.
Whether crossing rivers or cutting through mountainous terrain, passageways can be achieved building arch bridges, cut and cover tunnels, wildlife crossings or buried bridge structures that can be single or multi-span. Precast concrete arches are a proven solution with a wide range of standardised arch profiles available reaching up to 22m span, and even larger spans for special projects.
On our precastarches.com website, which is dedicated to Precast arches, you can download our full catalogue of shapes in .pdf format. The website also offers the possibility to use the Design Tool to quickly calculate the optimal arch shape for your next project and to download it in .dwg AutoCAD compatible format.
Our precast arches can also be coupled to Reinforced Earth® spandrel walls as part of a completely integrated and engineered solution for which our engineers have years of design experience and numerous project references.
The transition from roadway embankment to a bridge can come in many forms. Our retaining wall solutions are widely used for the construction of access ramps. Bridge abutments are considered critical structures, and our solutions are well suited in addressing load distribution and settlement. Whether pile-supported or fill-supported, bridge abutments are dependent on confined stabilized soil. Our earth retaining solutions are ideal in addressing conditions that are specific to each bridge application.
Roadway widening
With the constant increase of traffic, roads often require widening to increase their capacity. Whether there is enough space available or existing embankments on the roadsides, our retaining wall solutions will allow to increase the width of the roadway while ensuring the continuity of service of the infrastructure. Our TerraLink® shored retaining wall solution has proven to be an excellent option for road widening applications, allowing to link a new structure to an existing one.
Our geogrid made solutions will allow help you to expand your road quickly when dealing with soft soils presenting low bearing capacity in an economical way, reducing the necessary excavations and volume of aggregates to be used.
Precast panels can be customised with architectural finish allowing designers and architects to add a touch of art to the structures.
Temporary roadway and bridge phasing
Highway construction often requires temporary shifts of traffic during phasing and staging of the works. Geoquest’s TerraTrel® and GeoTrel® temporary wire mesh Mechanically Stabilised Earth (MSE) retaining wall solutions allow for easy handling and installation, with the same load-carrying capacity as precast concrete faced walls.
Building roads and motorways nearby residential areas can imply noise disturbance for the inhabitants. Our StresTec™ post-and-panel sound walls can be installed in areas of low height clearance and our FanWall™ free-standing sound barriers can be mounted without deep foundation elements.
Benefits of using Geoquest
Pre-sequenced design approach
Pre-sequenced design approach
From the foundation works to top-out works, our pre-engineered and prefabricated materials are bundled to provide builders with a clear path for rapid installation and quick in-service use for operations and passengers.
Meeting airport construction complexities
Meeting airport construction complexities
Our engineers apply their skills and experience that are common to their everyday road, bridge, and heavy commercial site works projects with added awareness and special attention given to aesthetics and functionality.
Minimal footprint and intrusions
Minimal footprint and intrusions
Using innovative techniques, Geoquest solutions minimise land use and the need for onsite production, formworks and scaffolding.
Speak to our team about your next project
Engineering expertise and 120 years or more of service life
Geoquest offers unrivalled engineering expertise to provide you with the best design and supply package, coupled to commercial excellence that will make your next road development project a success.
Guaranteeing long-term life duration and minimum necessity for maintenance of the infrastructure is of outmost importance, and our designs are optimised based on the service life that is required.
